Answer this question truthfully
### Question: What causes Gastrointestinal bleeding?
### Response: GI bleeding may be due to conditions that are not serious, including:
Anal fissure Hemorrhoids
However, GI bleeding may also be a sign of more serious diseases and conditions, such as the following cancers of the GI tract:
Cancer of the colon Cancer of the small intestine Cancer of the stomach Intestinal polyps (a pre-cancerous condition)
Other possible causes of GI bleeding include:
Abnormal blood vessels in the lining of the intestines (also called angiodysplasias) Bleeding diverticulum, or diverticulosis Crohn's disease or ulcerative colitis Esophageal varices Esophagitis Gastric (stomach) ulcer Intussusception (bowel telescoped on itself) Mallory-Weiss tear Meckel's diverticulum Radiation injury to the bowel